Rainbow moonstone might be called a "moonstone," but it's actually a transparent form of labradorite. Labradorite and moonstone are both feldspars with similar chemical makeups and crystal structures, but which react to light differently. It can be distinguished from true moonstone by its greater transparency and play of colour, which are qualities of labradorite. This captivating effect is created by layers of internally repeating feldspar that scatter light, producing a mystical blue glow that resembles moonbeams. While high-quality rainbow moonstone is highly transparent, the roughs and tumbles commonly sold are usually less so, and the stone colour of rainbow moonstone is typically a somewhat translucent white or grey. It is also sometimes called "Labradorite Moonstone."
I don't think I really noticed Frigg my first time around the "interested in Norse mythology" block (high school). When I started poking at the idea of becoming heathen back in... I want to say 2012? I still didn't really pay attention to her. In fact, the idea of working with gods put me off, made me sick, because of how traumatized I was by my experience with Christianity.